Vocabulary: A language’s vocabulary comprises all the words currently used by its speakers. The vocabulary is written down in dictionaries in comparison to grammar and syntax rules laid down in “rule books”. Vocabulary can be reduced to its use at a particular time or by individual speakers for the purpose of research. See also idiolect, language, private language, conservatism, words, meaning of a word, meaning. _____________Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments.